#42407C#42407C

#42407C is a dark, moderate blue. Relative luminance 0.063; OKLCH L 40.4% C 0.099 H 282.6°. Best body text is #FFFFFF at 9.31:1 contrast (WCAG AA passes).

Color values

HEX	#42407C
RGB	rgb(66, 64, 124)
HSL	hsl(242, 32%, 37%)
HSV	hsv(242, 48%, 49%)
CMYK	cmyk(46.8%, 48.4%, 0%, 51.4%)
CIE-LAB	lab(30.11, 17.77, -33.95)
CIE-LCH	lch(30.11, 38.32, 297.63°)
OKLab	oklab(40.45% 0.0214 -0.0962)
OKLCH	oklch(40.45% 0.099 282.6)
XYZ	xyz(7.7172, 6.2799, 19.8704)
Luminance	0.0628 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42407C #7A7C40

analogous

#405C7C #42407C #60407C

triadic

#42407C #7C4240 #407C42

tetradic

#42407C #7C405C #7A7C40 #407C60

square

#42407C #7C405C #7A7C40 #407C60

split-complementary

#42407C #7C6040 #5C7C40

monochromatic

#17162B #2D2B54 #42407C #5755A4 #7D7BBB

Accessibility & contrast

On white

9.31

#42407C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.26

#42407C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42407C

9.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42407C	#FFFFFF	#000000	##FFFFFF
##42407C	1.00	9.31	2.26	9.31
#FFFFFF	9.31	1.00	21.00	1.00
#000000	2.26	21.00	1.00	21.00
##FFFFFF	9.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#28497E

Deuteranopia (green-blind)

#25457B

Tritanopia (blue-blind)

#2F4C58

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #42407c;
/* rgb */ color: rgb(66, 64, 124);
/* oklch */ color: oklch(40.4% 0.099 282.6);

Tailwind

colors: {
  custom: {
    50: '#7a74a2',
    500: '#42407c',
    950: '#000000',
  },
}

SCSS

$custom: #42407c;
$custom-light: #7a74a2;
$custom-dark: #000000;

JSON

{
  "hex": "#42407c",
  "rgb": {
    "r": 66,
    "g": 64,
    "b": 124
  },
  "hsl": {
    "h": 242,
    "s": 31.915,
    "l": 36.863
  },
  "oklch": {
    "l": 0.40446,
    "c": 0.0986,
    "h": 282.6
  },
  "luminance": 0.0628
}

Semantic roles & 50–950 ramp

primary

#42407C

secondary

#A4A672

accent

#C860C5

background

#F7F7FA

surface

#EEEDF3

border

#C9C8CD

text

#09080F

muted

#7B7B7F

Preview Lab

Preview with #42407C

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →